Errors:
Bad value “Cache-control” for attribute “http-equiv” on element “meta”.
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Bad value “Expires” for attribute “http-equiv” on element “meta”.
Bad value “schema.DC” for attribute “rel” on element “link”: The string “schema.DC” is not a registered keyword.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “st-trigger-effects”.
Stray end tag “style”.
The “strike” element is obsolete. Use CSS instead.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Stray end tag “span”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
Saw “'” when expecting an attribute name. Probable cause: “=” missing immediately before.
Quote “'” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “<!--style” not allowed on element “a” at this point.
Attribute “'khi” not allowed on element “a” at this point.
Attribute “muốn” not allowed on element “a” at this point.
Attribute “hiển” not allowed on element “a” at this point.
Attribute “thị” not allowed on element “a” at this point.
Attribute “nút” not allowed on element “a” at this point.
Attribute “ở” not allowed on element “a” at this point.
Attribute “pc” not allowed on element “a” at this point.
Attribute “cho” not allowed on element “a” at this point.
Attribute “kích” not allowed on element “a” at this point.
Attribute “hoạt'--” not allowed on element “a” at this point.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Text run is not in Unicode Normalization Form C.
The first occurrence of ID “st-trigger-effects” was here.
The “type” attribute is unnecessary for JavaScript resources.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Attribute “<!--style” is not serializable as XML 1.0.
Attribute “'khi” is not serializable as XML 1.0.
Attribute “hoạt'--” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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